🐛 Fix pulldown sanity check

Marlin/src/HAL/AVR/inc/SanityCheck.h

 #if ENABLED(POSTMORTEM_DEBUGGING)
   #error "POSTMORTEM_DEBUGGING is not supported on AVR boards."
 #endif
+
+#if USING_PULLDOWNS
+  #error "PULLDOWN pin mode is not available on AVR boards."
+#endif

Marlin/src/HAL/DUE/inc/SanityCheck.h

 #if HAS_TMC_SW_SERIAL
   #error "TMC220x Software Serial is not supported on the DUE platform."
 #endif
+
+#if USING_PULLDOWNS
+  #error "PULLDOWN pin mode is not available on DUE boards."
+#endif

Marlin/src/HAL/ESP32/inc/SanityCheck.h

 #if MB(MKS_TINYBEE) && ENABLED(FAST_PWM_FAN)
   #error "FAST_PWM_FAN is not available on TinyBee."
 #endif
+
+#if USING_PULLDOWNS
+  #error "PULLDOWN pin mode is not available on ESP32 boards."
+#endif

Marlin/src/HAL/TEENSY31_32/inc/SanityCheck.h

 #if ENABLED(POSTMORTEM_DEBUGGING)
   #error "POSTMORTEM_DEBUGGING is not yet supported on Teensy 3.1/3.2."
 #endif
+
+#if USING_PULLDOWNS
+  #error "PULLDOWN pin mode is not available on Teensy 3.1/3.2 boards."
+#endif

Marlin/src/HAL/TEENSY35_36/inc/SanityCheck.h

 #if ENABLED(POSTMORTEM_DEBUGGING)
   #error "POSTMORTEM_DEBUGGING is not yet supported on Teensy 3.5/3.6."
 #endif
+
+#if USING_PULLDOWNS
+  #error "PULLDOWN pin mode is not available on Teensy 3.5/3.6 boards."
+#endif

Marlin/src/inc/Conditionals_post.h

 #if PIN_EXISTS(SAFE_POWER) && DISABLED(DISABLE_DRIVER_SAFE_POWER_PROTECT)
   #define HAS_DRIVER_SAFE_POWER_PROTECT 1
 #endif
+
+#if ANY(ENDSTOPPULLDOWNS, ENDSTOPPULLDOWN_ZMIN_PROBE, \
+    ENDSTOPPULLDOWN_XMIN, ENDSTOPPULLDOWN_YMIN, ENDSTOPPULLDOWN_ZMIN, \
+    ENDSTOPPULLDOWN_IMIN, ENDSTOPPULLDOWN_JMIN, ENDSTOPPULLDOWN_KMIN, \
+    ENDSTOPPULLDOWN_XMAX, ENDSTOPPULLDOWN_YMAX, ENDSTOPPULLDOWN_ZMAX, \
+    ENDSTOPPULLDOWN_IMAX, ENDSTOPPULLDOWN_JMAX, ENDSTOPPULLDOWN_KMAX, \
+    POWER_LOSS_PULLDOWN, CALIBRATION_PIN_PULLDOWN, FIL_RUNOUT_PULLDOWN, \
+    FIL_RUNOUT1_PULLDOWN, FIL_RUNOUT2_PULLDOWN, FIL_RUNOUT3_PULLDOWN, FIL_RUNOUT4_PULLDOWN, \
+    FIL_RUNOUT5_PULLDOWN, FIL_RUNOUT6_PULLDOWN, FIL_RUNOUT7_PULLDOWN, FIL_RUNOUT8_PULLDOWN)
+  #define USING_PULLDOWNS 1
+#endif

Marlin/src/inc/SanityCheck.h

   #endif
 #endif
 
-#if !defined(TARGET_LPC1768) && ANY( \
-      ENDSTOPPULLDOWNS, ENDSTOPPULLDOWN_ZMIN_PROBE, \
-      ENDSTOPPULLDOWN_XMAX, ENDSTOPPULLDOWN_YMAX, ENDSTOPPULLDOWN_ZMAX, \
-      ENDSTOPPULLDOWN_XMIN, ENDSTOPPULLDOWN_YMIN, ENDSTOPPULLDOWN_ZMIN, \
-      FIL_RUNOUT_PULLDOWN,  \
-      FIL_RUNOUT1_PULLDOWN, FIL_RUNOUT2_PULLDOWN, FIL_RUNOUT3_PULLDOWN, FIL_RUNOUT4_PULLDOWN, \
-      FIL_RUNOUT5_PULLDOWN, FIL_RUNOUT6_PULLDOWN, FIL_RUNOUT7_PULLDOWN, FIL_RUNOUT8_PULLDOWN, \
-      POWER_LOSS_PULLDOWN, CALIBRATION_PIN_PULLDOWN \
-    )
-  #error "PULLDOWN pin mode is not available on the selected board."
-#endif
-
 #if BOTH(ENDSTOPPULLUPS, ENDSTOPPULLDOWNS)
   #error "Enable only one of ENDSTOPPULLUPS or ENDSTOPPULLDOWNS."
 #elif BOTH(FIL_RUNOUT_PULLUP, FIL_RUNOUT_PULLDOWN)